Answer:
First image:
In bars 1 and 2, the numbers 1 and 2 indicate quarter notes, and the number 3 is a half note.
In bar 3, the numbers 1 through 4 are quarter notes. In the last bar (bar 4), the number 1 is a whole note.
Second image:
In bar 1, numbers 1 and 2 are quarter notes and 3 and 4 are two eighth notes.
In bar 2, numbers 1 and 2 are quarter notes, 3 is an eighth note, and 4 is a quarter note. In bar 3, number 1 is a half note, and numbers 3 and 4 are two eighth notes.
In the last bar, the number 1 is a whole note.
Third image:
In bar 1, numbers 1 and 3 are quarter notes, and 2 and 4 are eighth notes.
In bar 2, numbers 1, 2, and 4 are eighth notes, and number 3 is a quarter note.
In bar 3, numbers 1 and 4 are quarter notes, and 2 and 3 are eighth notes.
In bar 4, numbers 1 and 2 are eighth notes, and 3 and 4 are quarter notes.
Explanation:
